Trace (Russian: След, romanized: Sled) is a Russian crime drama television series about employees of Federal Expert Service ('FES'), the fictional organization. It was broadcast on the Channel One Russia from September 3, 2007 till August 25, 2011 (Monday – Thursday, night TV broadcast). According to Alexander Levin, Producer, the idea of the TV-series belonged to Konstantin Ernst. From September 5, 2011 premiere episodes are broadcast on Petersburg – Channel 5. The show continues to have high ratings. ()